Actually, I'm fairly certain qb does allow interrupts to be called. It requires use of an include (can't remember which one off hand), but all you do is configure the interrupt call, then call the subroutine in the include, and poof, generated interrupt. I'm not a user of quickbasic, I always used things like powerbasic or turbo pascal or turbo C when programming in dos, since I never liked the way qbasic apps took over the computer entirely to the exclusion of all else, but in this case, considering what you're trying to do, that's probably a good thing. I'll dig around here and see if I can find any programs using the interrupt calls, I'm sure I have some, then I can post the details.
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